001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.record.compiler; 020 021import org.apache.hadoop.classification.InterfaceAudience; 022import org.apache.hadoop.classification.InterfaceStability; 023 024/** 025 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>. 026 */ 027@Deprecated 028@InterfaceAudience.Public 029@InterfaceStability.Stable 030public class JFloat extends JType { 031 032 class JavaFloat extends JavaType { 033 034 JavaFloat() { 035 super("float", "Float", "Float", "TypeID.RIOType.FLOAT"); 036 } 037 038 String getTypeIDObjectString() { 039 return "org.apache.hadoop.record.meta.TypeID.FloatTypeID"; 040 } 041 042 void genHashCode(CodeBuffer cb, String fname) { 043 cb.append(Consts.RIO_PREFIX + "ret = Float.floatToIntBits("+fname+");\n"); 044 } 045 046 void genSlurpBytes(CodeBuffer cb, String b, String s, String l) { 047 cb.append("{\n"); 048 cb.append("if ("+l+"<4) {\n"); 049 cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+ 050 " Provided buffer is smaller.\");\n"); 051 cb.append("}\n"); 052 cb.append(s+"+=4; "+l+"-=4;\n"); 053 cb.append("}\n"); 054 } 055 056 void genCompareBytes(CodeBuffer cb) { 057 cb.append("{\n"); 058 cb.append("if (l1<4 || l2<4) {\n"); 059 cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+ 060 " Provided buffer is smaller.\");\n"); 061 cb.append("}\n"); 062 cb.append("float f1 = org.apache.hadoop.record.Utils.readFloat(b1, s1);\n"); 063 cb.append("float f2 = org.apache.hadoop.record.Utils.readFloat(b2, s2);\n"); 064 cb.append("if (f1 != f2) {\n"); 065 cb.append("return ((f1-f2) < 0) ? -1 : 0;\n"); 066 cb.append("}\n"); 067 cb.append("s1+=4; s2+=4; l1-=4; l2-=4;\n"); 068 cb.append("}\n"); 069 } 070 } 071 072 class CppFloat extends CppType { 073 074 CppFloat() { 075 super("float"); 076 } 077 078 String getTypeIDObjectString() { 079 return "new ::hadoop::TypeID(::hadoop::RIOTYPE_FLOAT)"; 080 } 081 } 082 083 /** Creates a new instance of JFloat */ 084 public JFloat() { 085 setJavaType(new JavaFloat()); 086 setCppType(new CppFloat()); 087 setCType(new CType()); 088 } 089 090 String getSignature() { 091 return "f"; 092 } 093}